LE, Rat Strain

**Semantic type:** Mammal

**Definition:** Derived by Long and Evans (1915) by crossing female Wistar rats with a wild gray male, the Long-Evans rat was disseminated to Charles River from Canadian Breeding Farm and Laboratories (1978). This outbred rat breed is white with a black or brown hood. The Long-Evans rat is utilized in a variety of research applications including obesity and behavioral research.

**Synonyms:** - LE - LONG EVANS - Long Evans